Do animal cells have phloem?
Tissues form organs which combine to allow organisms to exist. Plant and animal cells have structures related to their functions. Complex tissues are made up of the xylem and phloem. Xylem tissue is important in the transport of water and mineral salts.
What do phloem cells do?
Phloem is the vascular plant tissue responsible for the transport and distribution of sugars produced by the photosynthesis.
Which cells of phloem are living cells?
Question 10
| Xylem | Phloem |
|---|---|
| Xylem consists of dead cells (parenchyma is the only living cells present in the xylem). | Pholem mainly contains living cells (fibres are the only dead cells in the phloem). |
What is characteristic of phloem cells?
Characteristics of phloem. Arranged in tubes. Purely a transport tissue- it is not used for support as well. Contains phloem fibres, phloem parenchyma, sieve tube elements and companion cells. Sieve tube elements and companion cells are the most important cell types in phloem for transport.
Are phloem cells living or dead?
Phloem consists of living cells. The cells that make up the phloem are adapted to their function: Sieve tubes – specialised for transport and have no nuclei . Each sieve tube has a perforated end so its cytoplasm connects one cell to the next.
How is a phloem cell adapted to its function?
The cells that make up the phloem are adapted to their function: Each sieve tube has a perforated end so its cytoplasm connects one cell to the next. Companion cells – transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy.
What is a phloem cell?
phloem, also called bast, tissues in plants that conduct foods made in the leaves to all other parts of the plant. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells. The other cell types in the phloem may be converted to fibres.
Does the phloem transport water?
The vascular system is comprised of two main types of tissue: the xylem and the phloem. The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots.
What kind of cells are in the phloem?
Phloem tissue contains several types of cells. The most important are long, hollow cells called sieve-tube cells. Columns of sieve tubes are joined end to end, allowing passage of materials from cell to cell.
What are some interesting facts about animal cells?
Animal cells are mainly involved in the transportation of water, oxygen and other soluble substances through their cell membranes. The other specialized functions of animal cells including respiration, digestion, motility, reproduction, cell division and other metabolic processes. Let us learn some more interesting facts about the Animal cell.
How are animal cells different from plant cells?
Animal cells have slight differences to the eukaryotic cells of plants and fungi. The clear differences are the lack of cell walls, chloroplasts and vacuoles and the presence of flagella, lysosomes and centrosomes in animal cells. Plant and fungal cells have cell walls.
How does an aphid get into the phloem?
Aphids (greenfly) and other insects feed on the phloem by inserting a fine tube into the plant, penetrating the tiny phloem cells deep within the plant. The high pressure in the phloem tubes forces the phloem sap into the insect.